Rotating shaft mechanism and electronic equipment

Abstract

The invention relates to the technical field of foldable electronic equipment, and discloses a rotating shaft mechanism and electronic equipment. In the rotating shaft mechanism provided by the invention, the cover plate covers the main shaft, and the cover plate is connected with the main shaft. A first swing arm of the first rotating assembly comprises a first arc-shaped rotating block, and the first arc-shaped rotating block is rotationally connected with the main shaft and rotationally connected with the cover plate, so that the first swing arm is rotationally connected with the main shaft and the cover plate. And the first rotating part and the second rotating part of the first arc-shaped rotating block are arranged at an interval in the axial direction of the rotating shaft mechanism. When the first swing arm rotates, the first rotating part slides along at least part of the surface of the main shaft and is in clearance fit with the cover plate, and the second rotating part slides along at least part of the surface of the cover plate and is in clearance fit with the main shaft. By the adoption of the scheme, the rotating reliability requirement of the rotating shaft mechanism can be met, the structure of the whole rotating shaft mechanism can be improved, and therefore structural optimization of the electronic equipment with the rotating shaft mechanism can be achieved.

Description

Technical Field

[0001] This application relates to the field of foldable electronic device technology, and more particularly to a pivot mechanism and electronic device. Background Technology

[0002] With the gradual maturation of flexible display technology, the way electronic devices display technology has undergone tremendous changes. Foldable flexible display mobile phones, foldable flexible display tablets, and wearable electronic devices with foldable flexible displays are a major direction for the evolution of future smart electronic devices.

[0003] As a crucial component enabling the folding function of foldable electronic devices, the hinge mechanism creates a space to accommodate the bent portion of the flexible display screen when the device is closed, preventing the screen from being stretched or compressed. When the device is unfolded, the hinge mechanism provides support for the flatness of the flexible display screen. Therefore, improvements to the hinge mechanism's structure significantly impact the overall structural optimization design of foldable electronic devices. Summary of the Invention

[0004] This application provides a rotating shaft mechanism and an electronic device to improve the structure of the rotating shaft mechanism, thereby achieving structural optimization design of the entire electronic device.

[0005] In a first aspect, this application provides a rotating shaft mechanism, which includes a main shaft, a cover plate, and a first rotating assembly. The cover plate is disposed on the main shaft and connected to it. The first rotating assembly includes a first swing arm, which includes a first arc-shaped rotating block. At least a portion of the first arc-shaped rotating block is located between the cover plate and the main shaft. The first arc-shaped rotating block is rotatably connected to both the main shaft and the cover plate, thereby achieving a rotatable connection between the first swing arm, the main shaft, and the cover plate. Furthermore, the first arc-shaped rotating block includes a first rotating portion and a second rotating portion, which are spaced apart along the axial direction of the rotating shaft mechanism. The first rotating portion includes a first surface and a second surface arranged opposite to each other, with the first surface facing the main shaft and the second surface facing the cover plate. The gap between the first surface and the main shaft is smaller than the gap between the second surface and the cover plate. The second rotating portion includes a third surface and a fourth surface arranged opposite to each other, with the third surface facing the cover plate and the fourth surface facing the main shaft. The gap between the third surface and the cover plate is smaller than the gap between the fourth surface and the main shaft. When the first swing arm rotates, the first rotating part slides along at least a portion of the surface of the main shaft, and the second rotating part slides along at least a portion of the surface of the cover plate.

[0006] The design scheme of the rotating shaft mechanism provided in this application allows the first rotating part to slide along at least a portion of the surface of the main shaft and the second rotating part to slide along at least a portion of the surface of the cover plate when the first swing arm rotates. Furthermore, because the first and second rotating parts are spaced apart along the axial direction of the rotating shaft mechanism, the parts of the first swing arm that overlap with the main shaft and the parts of the first swing arm that overlap with the cover plate are misaligned. With this design, since the first rotating part only needs to overlap with the main shaft during movement, and not with the cover plate, the thickness of the first rotating part and the main shaft only needs to be designed to meet the requirements of reliable overlap, which is beneficial for reducing the thickness of the first rotating part and the main shaft. Furthermore, since the portion of the cover plate opposite to the first rotating part does not overlap with it, the structural reliability requirements for this portion are lower, which facilitates a reduction in the thickness of this part of the cover plate. Additionally, the thicknesses of the second rotating part and the cover plate only need to be designed to meet the requirements for reliable overlap between them, which also facilitates a reduction in the thickness of the second rotating part and the cover plate. Similarly, since the portion of the main shaft opposite to the second rotating part does not overlap with it, the structural reliability requirements for this portion of the main shaft are lower, which also facilitates a reduction in the thickness of this portion of the main shaft. Therefore, the design scheme of the rotating shaft mechanism provided in this application, without adding any parts, can satisfy the rotational reliability requirements of the first swing arm while facilitating the thinning of the first arc-shaped rotating block, the main shaft, and the cover plate, especially the thinning of the first arc-shaped rotating block, by axially offsetting the parts of the main shaft and the cover plate that overlap with the first arc-shaped rotating block. This is particularly beneficial for the thinning of the first arc-shaped rotating block, thereby facilitating the realization of the thin design of the entire rotating shaft mechanism, improving the structural reliability, and increasing the screen space, thus facilitating the structural optimization of electronic devices using this rotating shaft mechanism.

[0007] In one possible implementation of this application, the cover plate includes a support surface for supporting the flexible display screen. Along the direction from the main shaft to the cover plate, the maximum distance from the first surface to the support surface is less than the maximum distance from the fourth surface to the support surface. The maximum distance from the third surface to the support surface is less than the maximum distance from the second surface to the support surface. That is, both the first and second rotating parts of the first arc-shaped rotating block of the first swing arm can be thinned, which is beneficial for thinning the first arc-shaped rotating block, thereby reducing the space occupied by the first arc-shaped rotating block in the pivot mechanism. This, in turn, facilitates the realization of a thinner design for the entire pivot mechanism, improves structural reliability, and increases the screen-accommodating space, thus contributing to the structural optimization of electronic devices using this pivot mechanism.

[0008] In one possible implementation of this application, the main shaft includes a first arc-shaped groove, and the cover plate includes a first arc-shaped protrusion. The first arc-shaped protrusion and the first arc-shaped groove are disposed opposite each other, and a first gap exists between the first arc-shaped protrusion and the first arc-shaped groove. At least a portion of the first rotating part is located within the first gap. When the first swing arm rotates, the first rotating part slides along the groove wall of the first arc-shaped groove. In this way, the groove wall of the first arc-shaped groove of the main shaft can be used to constrain the motion trajectory of the first rotating part, thereby ensuring the rotational stability of the first rotating part and thus improving the rotational stability of the first swing arm.

[0009] In one possible implementation of this application, the second rotating part includes a second arcuate groove, and the cover plate includes a second arcuate protrusion, at least a portion of which is located within the second arcuate groove. When the first swing arm rotates, the second rotating part slides along the surface of the second arcuate protrusion. This allows the surface of the second arcuate protrusion of the cover plate to constrain the motion trajectory of the second rotating part, thereby ensuring the rotational stability of the second rotating part and thus improving the rotational stability of the first swing arm.

[0010] In addition to the above structure, in one possible implementation, the first arc-shaped rotating block further includes a first connecting portion, which connects the first rotating portion and the second rotating portion. The thickness of the first rotating portion is less than the thickness of the first connecting portion, and the thickness of the second rotating portion is less than the thickness of the first connecting portion. This helps to improve the structural reliability of the first arc-shaped rotating block, thereby improving the structural reliability of the first swing arm.

[0011] In one possible implementation of this application, the first rotating assembly further includes a first housing fixing frame, and the first swing arm is slidably connected to the first housing fixing frame to meet the rotation requirements of the first swing arm.

[0012] Specifically, the first housing fixing frame may include a first sliding groove, a portion of the first swing arm is located in the first sliding groove, and when the first swing arm rotates, the first swing arm slides within the first sliding groove along the thickness direction of the first housing fixing frame. This improves the stability of the sliding of the first swing arm relative to the first housing fixing frame.

[0013] In one possible implementation of this application, the first rotating assembly further includes a first connecting rod, which is mounted on the first housing fixture. Along the axial direction of the rotating shaft mechanism, the first connecting rod is located on one side of the first swing arm, and the first connecting rod includes a first end and a second end. The first end is rotatably connected to the first swing arm, and the second end is rotatably connected to the first housing fixture. With this design, the first connecting rod can be rotated during the rotation of the first rotating assembly, thereby causing the first swing arm to rotate. It can be understood that by designing the structure of the first connecting rod, the motion trajectory of the first swing arm can be designed to improve its rotational stability.

[0014] In one possible implementation of this application, the rotating shaft mechanism further includes a second rotating assembly, which is disposed on both sides of the main shaft, along with the first rotating assembly. The second rotating assembly includes a second swing arm, which includes a second arc-shaped rotating block. At least a portion of the second arc-shaped rotating block is located between the cover plate and the main shaft, and is rotatably connected to both the main shaft and the cover plate. The second arc-shaped rotating block includes a third rotating portion and a fourth rotating portion, which are spaced apart along the axial direction of the rotating shaft mechanism. The third rotating portion includes a fifth surface and a sixth surface facing away from each other, with the fifth surface facing the main shaft and the sixth surface facing the cover plate. The gap between the fifth surface and the main shaft is smaller than the gap between the sixth surface and the cover plate. The fourth rotating portion includes a seventh surface and an eighth surface facing away from each other, with the seventh surface facing the cover plate and the eighth surface facing the main shaft. The gap between the seventh surface and the cover plate is smaller than the gap between the eighth surface and the main shaft. When the second swing arm rotates, the third rotating portion slides along at least a portion of the surface of the main shaft, and the fourth rotating portion slides along at least a portion of the surface of the cover plate. The second swing arm adopts this design method, which can meet the rotation reliability requirements of the second swing arm, while facilitating the thinning of the second arc-shaped rotating block, the main shaft and the cover plate. In particular, it is beneficial to the thinning of the second arc-shaped rotating block, thereby facilitating the realization of the thin design of the entire rotating shaft mechanism, improving the structural reliability and increasing the screen space, thus facilitating the structural optimization of electronic devices using this rotating shaft mechanism.

[0015] In one possible implementation of this application, the cover plate includes a support surface for supporting the flexible display screen. Along the direction from the main axis to the cover plate, the maximum distance from the fifth surface to the support surface is less than the maximum distance from the eighth surface to the support surface. The maximum distance from the seventh surface to the support surface is less than the maximum distance from the sixth surface to the support surface. That is, the third and fourth rotating parts of the second arc-shaped rotating block of the second swing arm can both be thinned, which is beneficial for thinning the second arc-shaped rotating block, thereby reducing the space occupied by the second arc-shaped rotating block in the pivot mechanism. This, in turn, facilitates the realization of a thinner design for the entire pivot mechanism, improves structural reliability, and increases the screen-accommodating space, thus contributing to the structural optimization of electronic devices using this pivot mechanism.

[0016] In one possible implementation of this application, the main shaft includes a third arc-shaped groove, and the cover plate includes a third arc-shaped protrusion. At least a portion of the third arc-shaped protrusion and the third arc-shaped groove are disposed opposite each other, and a second gap exists between the third arc-shaped protrusion and the third arc-shaped groove. At least a portion of the third rotating part is located within the second gap. When the second swing arm rotates, the third rotating part slides along the groove wall of the third arc-shaped groove. This allows the groove wall of the third arc-shaped groove of the main shaft to constrain the motion trajectory of the third rotating part, thereby ensuring the rotational stability of the third rotating part and improving the rotational stability of the second swing arm.

[0017] In one possible implementation of this application, the cover plate includes a fourth arc-shaped protrusion, and when the second swing arm rotates, the fourth rotating part slides along the surface of the fourth arc-shaped protrusion. This design allows the surface of the fourth arc-shaped protrusion to constrain the motion trajectory of the fourth rotating part, thereby ensuring the rotational stability of the fourth rotating part and improving the rotational stability of the second swing arm.

[0018] In addition to the above structure, in one possible implementation, the second arc-shaped rotating block further includes a second connecting portion, which connects the third rotating portion and the fourth rotating portion. The thickness of the third rotating portion is less than the thickness of the second connecting portion, and the thickness of the fourth rotating portion is less than the thickness of the second connecting portion. This improves the structural reliability of the second arc-shaped rotating block, thereby improving the structural reliability of the second swing arm.

[0019] In one possible implementation of this application, the spindle includes a mounting groove, a cover plate is mounted in the mounting groove, and the cover plate is detachably connected to the spindle. This not only improves the ease of connection between the cover plate and the spindle, but also helps to improve the structural compactness of the shaft assembly, thereby facilitating the miniaturization and thinning design of the entire shaft mechanism.

[0020] Secondly, this application provides an electronic device comprising a first housing, a second housing, and a rotating shaft mechanism as described in the first aspect, wherein the first housing and the second housing are rotatably connected via the rotating shaft mechanism. The overall structure of the electronic device provided by this application can be effectively optimized, thereby improving the user experience. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the electronic device provided in the embodiment of this application when it is in a closed state;

[0022] Figure 2 A schematic diagram of the structure of the electronic device provided in the embodiment of this application when it is in a flattened state;

[0023] Figure 3 This is a schematic diagram of a rotating shaft mechanism provided in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of a rotating shaft assembly provided in an embodiment of this application;

[0025] Figure 5 for Figure 4 An exploded view of the pivot assembly shown;

[0026] Figure 6a This is a schematic diagram of the structure of the first swing arm provided in an embodiment of this application;

[0027] Figure 6b for Figure 6aAA section view of the first swing arm shown;

[0028] Figure 6c for Figure 6a A cross-sectional view of the first swing arm shown from another perspective;

[0029] Figure 6d for Figure 4 BB cross-sectional view of the rotating shaft assembly shown;

[0030] Figure 7 for Figure 4 CC section view of the rotating shaft assembly shown;

[0031] Figure 8a A schematic diagram of a structure of the rotating shaft assembly provided in this application in an intermediate state;

[0032] Figure 8b for Figure 8a The Y-axis view of the pivot assembly shown;

[0033] Figure 8c for Figure 8b The DD section view of the rotating shaft assembly shown;

[0034] Figure 9a A schematic diagram of a structure for the rotating shaft assembly provided in this application in a closed state;

[0035] Figure 9b for Figure 9a The M-direction view of the pivot assembly shown;

[0036] Figure 9c for Figure 9b The EE cross-sectional view of the rotating shaft assembly shown;

[0037] Figure 10 A schematic diagram of the structure of a spindle provided in an embodiment of this application;

[0038] Figure 11 A schematic diagram of a cover plate provided in an embodiment of this application;

[0039] Figure 12 A cross-sectional view of the assembly structure of the spindle and cover plate provided in an embodiment of this application;

[0040] Figure 13 for Figure 4 FF cross-sectional view of the pivot assembly shown;

[0041] Figure 14 for Figure 8b GG cross-sectional view of the pivot assembly shown;

[0042] Figure 15 for Figure 9bHH cross-sectional view of the rotating shaft assembly shown;

[0043] Figure 16 Another sectional view of the assembly structure of the spindle and cover plate provided in the embodiments of this application;

[0044] Figure 17a This is a schematic diagram of a prior art rotating shaft mechanism in a closed state.

[0045] Figure 17b A schematic diagram of the rotating shaft mechanism provided in this application when it is in a closed state;

[0046] Figure 17c Another structural schematic diagram of the rotating shaft mechanism provided in this application when it is in a closed state;

[0047] Figure 17d A schematic diagram of the rotating shaft mechanism provided in this application when it is in a closed state;

[0048] Figure 18 A schematic diagram of a first housing fixing frame provided in an embodiment of this application;

[0049] Figure 19 A schematic diagram of an assembly structure of the first housing fixing frame and the first swing arm provided in an embodiment of this application;

[0050] Figure 20 A schematic diagram of another assembly structure of the first housing fixing frame and the first swing arm provided in the embodiments of this application;

[0051] Figure 21 This is a schematic diagram of a first link provided in an embodiment of this application.

[0052] Figure label:

[0053] 1000 - Rotating shaft mechanism; 2000 - First housing; 3000 - Second housing; 4000 - Flexible display screen; 100 - Rotating shaft assembly;

[0054] 10-Spindle; 101-Mounting groove; 102-First arc-shaped groove; 103-Third arc-shaped groove; 20-Cover plate; 201-First arc-shaped protrusion;

[0055] 202 - Second arc-shaped protrusion; 203 - Third arc-shaped protrusion; 204 - Fourth arc-shaped protrusion; 205 - Support surface;

[0056] 30-First rotating assembly; 301-First swing arm; 3011-First arc-shaped rotating block; 30111-First rotating part; 301111-First surface;

[0057] 301112 - Second surface; 30112 - Second rotating part; 301121 - Third surface; 301122 - Fourth surface;

[0058] 301123 - Second arc-shaped groove; 30113 - First connecting part; 302 - First housing fixing frame; 3021 - First sliding groove; 303 - First connecting piece;

[0059] 3031 - First end; 3032 - Second end; 40 - Fastener; 50 - First gap; 70 - Second gap;

[0060] 60-Second rotating assembly; 601-Second swing arm; 6011-Second arc-shaped rotating block; 60111-Third rotating part; 601111-Fifth surface;

[0061] 601112 - Sixth surface; 60112 - Fourth rotating part; 601121 - Seventh surface; 601122 - Eighth surface; 60113 - Second connecting part;

[0062] 602 - Second housing mounting bracket. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The terms expressing position and direction described in the embodiments of this application are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this application. The accompanying drawings of the embodiments of this application are only for illustrating relative positional relationships and do not represent actual scale.

[0064] It should be noted that specific details are set forth in the following description to facilitate understanding of this application. However, the embodiments of this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the embodiments of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0065] In this application, the electronic device may be, for example, a smart ring, smartwatch, smart bracelet or smart glasses, or other wearable electronic devices, or a mobile phone, laptop, tablet computer or PDA, etc. This application does not limit the specific product form of the electronic device or the functions it can achieve.

[0066] To facilitate understanding of the hinge mechanism and electronic device provided in the embodiments of this application, their application scenarios are first described below. The hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, personal digital assistants (PDAs), laptops, or tablets. When applying the hinge mechanism provided in the embodiments of this application to an electronic device, please refer to... Figure 1 , Figure 1 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application when it is in a closed state. Figure 1 In the illustrated embodiment, a mobile phone is used as an example electronic device for explanation. In addition to the hinge mechanism 1000, this electronic device may also include two housings and a flexible display screen (…). Figure 1 (Not shown in the image). For ease of explanation, in this application, the two housings of the electronic device can be named the first housing 2000 and the second housing 3000, respectively. The first housing 2000 and the second housing 3000 are located on both sides of the rotating shaft mechanism 1000, and at least one of the first housing 2000 and the second housing 3000 can be rotatably connected to the rotating shaft mechanism 1000, thereby enabling the electronic device to switch between a flattened state, a closed state, and an intermediate state between the flattened state and the closed state (hereinafter referred to as the intermediate state).

[0067] Reference Figure 2 , Figure 2 This is a schematic diagram of the electronic device provided in this application in a flattened state. In this flattened state, the first housing 2000 and the second housing 3000 are still located on both sides of the pivot mechanism 1000. Furthermore, the surfaces of the first housing 2000, the second housing 3000, and the pivot mechanism 1000 facing the flexible display screen 4000 are approximately on the same plane. The flexible display screen 4000 can continuously cover the first housing 2000, the second housing 3000, and the pivot mechanism 1000, with the pivot mechanism 1000 corresponding to the bendable portion of the flexible display screen 4000. The flexible display screen 4000 can be fixedly connected to the first housing 2000 and the second housing 3000, and the connection method can be, but is not limited to, adhesive bonding. Thus, when the electronic device is in such a flattened state... Figure 2 When the display is in the flattened state shown, the first housing 2000 and the second housing 3000 can provide flat support for the flexible display screen 4000.

[0068] In this application, the electronic device can be either an outward-folding or inward-folding type. In an outward-folding electronic device, the flexible display screen 4000 remains on the outside of the device throughout the process of changing from a flattened to a closed state; while in an inward-folding electronic device, the flexible display screen 4000 remains on the inside of the device throughout the process of changing from a flattened to a closed state. Regardless of the folding form of the electronic device, the first housing 2000 and the second housing 3000 are... Figure 2 The flattened state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2 During the relative rotation of the flattened state shown, the flexible display screen 4000 can be bent or flattened along with the first housing 2000 and the second housing 3000.

[0069] Understandably, electronic devices are made of Figure 2 The flattened state shown Figure 1 The closed state shown, or by Figure 1 The closed state shown Figure 2 The process of flattening the device as shown is the process of the first housing 2000 and the second housing 3000 rotating around the pivot mechanism 1000. The pivot mechanism 1000, as a key functional component in the foldable electronic device, is designed to correspond to the foldable portion of the flexible display screen 4000; therefore, it plays a crucial role in... Figure 2 The support for the foldable portion of the flexible display 4000 in the flattened state, as shown, and in Figure 1 The closed state shown plays a crucial role in accommodating the foldable portion of the flexible display screen 4000. Furthermore, the dimensional design of the hinge mechanism 1000 also influences the overall slim design of the electronic device. Therefore, it can be understood that improving the structure of the hinge mechanism 1000 is an important part of the overall structural optimization design process of the electronic device.

[0070] In view of this, this application improves the structure of the rotating shaft mechanism to optimize the overall structure of the electronic device. To facilitate understanding of the solution provided in this application, a detailed description is provided below with reference to the accompanying drawings.

[0071] Figure 3 This is a schematic diagram of a rotating shaft mechanism provided in an embodiment of this application. Figure 3The illustrated embodiment demonstrates the structure of the hinge mechanism 1000 when the electronic device is in a flattened state. In some embodiments of this application, the hinge mechanism 1000 may include one or more hinge assemblies 100 along its axial direction. The number of hinge assemblies 100 may be selected based on the axial dimensions of the electronic device and the axial dimensions of each hinge assembly 100, for example... Figure 3 In the illustrated embodiment, the pivot mechanism 1000 may include two pivot assemblies 100 arranged axially and connected to each other to meet the structural requirements for folding reliability of electronic devices.

[0072] Figure 4 This is a schematic diagram of a rotating shaft assembly provided in an embodiment of this application, which can be used as an example to illustrate... Figure 3 The structure of the rotating shaft assembly 100 of the rotating shaft mechanism 1000 shown. Figure 4 As shown, the shaft assembly 100 includes a main shaft 10 and a cover plate 20. The cover plate 20 covers the main shaft 10. In some embodiments of this application, the cover plate 20 includes a support surface 205, which is also referred to herein. Figure 4 and Figure 2 It is understandable that the support surface 205 of the cover plate 20 can be used to support the flexible display screen 4000 in order to improve the flatness of the flexible display screen 4000 in the unfolded state.

[0073] To facilitate understanding of the structure of the pivot assembly 100, please refer to... Figure 5 , Figure 5 for Figure 4 An exploded view of the pivot assembly shown. See also... Figure 4 and Figure 5 As can be seen, the cover plate 20 is connected to the spindle 10. This application does not limit the specific connection method between the cover plate 20 and the spindle 10. For example, they can be connected by fasteners 40 such as screws to achieve a detachable connection between the cover plate 20 and the spindle 10, thereby improving the convenience of connection between the cover plate 20 and the spindle 10. In addition, as Figure 5 As shown, the spindle 10 may include a mounting groove 101, which is also referred to Figure 4 and Figure 5 The cover plate 20 can be installed in the mounting groove 101, which helps to improve the structural compactness of the shaft assembly 100, thereby facilitating the miniaturization and thinning design of the entire shaft mechanism 1000.

[0074] You can continue to refer to Figure 5 The rotating shaft assembly 100 also includes a first rotating assembly 30, which includes a first swing arm 301. The first swing arm 301 is rotatably connected to the main shaft 10 and to the cover plate 20, thereby realizing the rotatable connection between the first rotating assembly 30 and the main shaft 10 and the cover plate 20.

[0075] Figure 6a This is a schematic diagram of the structure of the first swing arm provided in an embodiment of this application, which can be used as an example to illustrate... Figure 5 The structure of the first swing arm 301 shown is as follows. Figure 6a As shown, the first swing arm 301 includes a first arc-shaped rotating block 3011, which is rotatably connected to the main shaft 10 and the cover plate 20 to realize the rotatable connection between the first swing arm 301 and the main shaft 10 and the cover plate 20.

[0076] You can continue to refer to Figure 6a The first arc-shaped rotating block 3011 includes a first rotating part 30111 and a second rotating part 30112. Along the axial direction of the rotating shaft assembly 100, that is, along the axial direction of the rotating shaft mechanism 1000, in... Figure 5 and Figure 6a The first rotating part 30111 and the second rotating part 30112 are arranged at intervals. In the rotating shaft mechanism 1000 provided in the embodiments of this application, the first rotating part 30111 and the second rotating part 30112 are both key structures for realizing the stable rotation of the first swing arm 301 around the main shaft 10 and the cover plate 20.

[0077] In addition, such as Figure 6a As shown, in some embodiments of this application, the first arc-shaped rotating block 3011 may further include a first connecting portion 30113, which is connected between the first rotating portion 30111 and the second rotating portion 30112. The thickness of the first rotating portion 30111 is less than the thickness of the first connecting portion 30113, and the thickness of the second rotating portion 30112 is less than the thickness of the first connecting portion 30113. This is beneficial to improving the structural reliability of the first arc-shaped rotating block 3011, thereby improving the structural reliability of the first swing arm 301.

[0078] Figure 6b for Figure 6a The first swing arm shown is a cross-sectional view (AA section). Figure 6c for Figure 6a The first swing arm shown is a cross-sectional view from another perspective. See also... Figure 6b and Figure 6c As shown, the first rotating part 30111 includes a first surface 301111 and a second surface 301112 disposed opposite to each other, wherein the first surface 301111 faces as shown in the figure. Figure 5 The main shaft 10 shown in the figure has its second surface 301112 facing as shown. Figure 5 The cover plate 20 shown.

[0079] In addition, refer to Figure 6b and Figure 6cThe second rotating part 30112 includes a third surface 301121 and a fourth surface 301122, with the third surface 301121 facing as shown. Figure 5 The cover plate 20 shown has its fourth side 301122 facing as shown. Figure 5 The spindle 10 shown in the figure.

[0080] Also refer to Figure 6d , Figure 6d for Figure 4 The diagram shows a BB cross-sectional view of the rotating shaft assembly. It can be seen that, in this application, the gap between the first surface 301111 and the main shaft 10 is smaller than the gap between the second surface 301112 and the cover plate 20. The gap between the third surface 301121 and the cover plate 20 is smaller than the gap between the fourth surface 301122 and the main shaft 10.

[0081] And you can continue to refer to it. Figure 6d In some embodiments of this application, along the direction from the main shaft 10 to the cover plate 20, the maximum distance from the first surface 301111 to the support surface 205 of the cover plate 20 is less than the maximum distance from the fourth surface 301122 to the support surface 205 of the cover plate 20, and the maximum distance from the third surface 301121 to the support surface 205 of the cover plate 20 is less than the maximum distance from the second surface 301112 to the support surface 205 of the cover plate 20. This facilitates the thinning of the first arc-shaped rotating block 3011, thereby reducing the space occupied by the first arc-shaped rotating block 3011 in the rotating shaft mechanism 1000, and further facilitating the realization of a thinner design for the entire rotating shaft mechanism 1000.

[0082] To further understand the cooperation relationship between the first swing arm 301, the main shaft 10, and the cover plate 20, please refer to... Figure 7 , Figure 7 for Figure 4 The shown is a CC section view of the rotating shaft assembly. Figure 7 This can be used to demonstrate the cooperation relationship between the first rotating part 30111, the main shaft 10, and the cover plate 20, that is, to demonstrate the cooperation relationship between the first rotating part 30111, the main shaft 10, and the cover plate 20 when the electronic device is in a flattened state. Figure 7 As shown, when the electronic device is in a flattened state, the gap between the first surface 301111 of the first rotating part 30111 and the main shaft 10 is smaller than the gap between the second surface 301112 and the cover plate 20. For example, the first surface 301111 of the first rotating part 30111 is in contact with at least a portion of the surface of the main shaft 10, while the second surface 301112 of the first rotating part 30111 is in clearance fit with the cover plate 20.

[0083] Figure 8a This is a schematic diagram of a structure of the rotating shaft assembly provided in this application in an intermediate state. Figure 8b for Figure 8aThe Y-axis view of the pivot assembly shown. Also, refer to... Figure 8c , Figure 8c for Figure 8b The DD section view of the rotating shaft assembly shown. Figure 8c This can be used to demonstrate the engagement relationship between the first rotating part 30111, the main shaft 10, and the cover plate 20 when the electronic device is in an intermediate state. For example... Figure 8c As shown, when the electronic device is in the intermediate state, the gap between the first surface 301111 of the first rotating part 30111 and the main shaft 10 is also smaller than the gap between the second surface 301112 and the cover plate 20. For example, the first surface 301111 of the first rotating part 30111 is in contact with at least a part of the surface of the main shaft 10, while the second surface 301112 of the first rotating part 30111 is in clearance fit with the cover plate 20.

[0084] Figure 9a This is a schematic diagram of a structure in which the rotating shaft assembly provided in this application is in a closed state. Figure 9b for Figure 9a The M-direction view of the pivot assembly shown. Also, refer to... Figure 9c , Figure 9c for Figure 9b The EE cross-sectional view of the rotating shaft assembly shown. Figure 9c This can be used to demonstrate the engagement relationship between the first rotating part 30111, the main shaft 10, and the cover plate 20 when the electronic device is in the closed state. For example... Figure 9c As shown, when the electronic device is in the closed state, the gap between the first surface 301111 of the first rotating part 30111 and the main shaft 10 is also smaller than the gap between the second surface 301112 and the cover plate 20. For example, the first surface 301111 of the first rotating part 30111 is in contact with at least a portion of the surface of the main shaft 10, while the second surface 301112 of the first rotating part 30111 is in clearance fit with the cover plate 20.

[0085] As can be seen from the above embodiments, during the process of the electronic device changing from a flattened state to a closed state, the first swing arm 301 rotates, causing the first arc-shaped rotating block 3011 to rotate. The first rotating part 30111 can slide along at least a portion of the surface of the main shaft 10, and the first rotating part 30111 is in clearance fit with the cover plate 20. In other words, the main shaft 10 can constrain the movement trajectory of the first rotating part 30111, so that the first swing arm 301 can rotate along a specific trajectory.

[0086] It is worth mentioning that, in this application, when the first swing arm 301 rotates, the first rotating part 30111 slides along at least a portion of the surface of the main shaft 10. This can include a situation where the first rotating part 30111 is always in contact with at least a portion of the surface of the main shaft 10, or a situation where, at some rotation angles, there is a small gap between the first rotating part 30111 and at least a portion of the surface of the main shaft 10. The key is to ensure that the main shaft 10 can constrain the movement trajectory of the first rotating part 30111.

[0087] This application does not limit the specific manner in which the first rotating part 30111 is fitted with the main shaft 10 and the cover plate 20 as described above; please refer to [reference needed]. Figure 10 , Figure 10 This is a schematic diagram of a spindle structure provided in an embodiment of this application. In this application, the spindle 10 may include a first arc-shaped groove 102. Additionally, refer to... Figure 11 , Figure 11 This is a schematic diagram of a cover plate provided in an embodiment of this application, which can be used to illustrate the structure of the cover plate 20 facing the main shaft 10. For example... Figure 11 As shown, the cover plate 20 includes a first arcuate protrusion 201. In some embodiments of this application, for example, see [reference needed]. Figure 12 , Figure 12 This is a cross-sectional view of the assembly structure of the spindle and cover plate provided in an embodiment of this application. It shows the relative positions of the first arc-shaped protrusion 201 and the first arc-shaped groove 102. The first arc-shaped protrusion 201 of the cover plate 20 and the first arc-shaped groove 102 of the spindle 10 are arranged opposite each other, and a first gap 50, which is an arc-shaped gap, exists between the first arc-shaped protrusion 201 and the first arc-shaped groove 102. Furthermore, at least a portion of the first rotating part 30111 may be located within the first gap 50 to achieve the arrangement of the first rotating part 30111 between the spindle 10 and the cover plate 20.

[0088] And by Figure 7 , Figure 8c and Figure 9c It can be seen that when the first swing arm 301 rotates, the first rotating part 30111 slides along the groove wall of the first arc-shaped groove 102, so as to constrain the motion trajectory of the first rotating part 30111 by utilizing the groove wall of the first arc-shaped groove 102, thereby ensuring the rotational stability of the first rotating part 30111, which is beneficial to improving the rotational stability of the first swing arm 301.

[0089] Reference Figure 13 , Figure 13 for Figure 4 The FF cross-sectional view of the pivot assembly shown. Figure 13This can be used to demonstrate the cooperation relationship between the second rotating part 30112 and the main shaft 10 and the cover plate 20, that is, to demonstrate the cooperation relationship between the second rotating part 30112 and the main shaft 10 and the cover plate 20 when the electronic device is in a flattened state. Figure 13 As shown, when the electronic device is in a flattened state, the gap between the third surface 301121 of the second rotating part 30112 and the cover plate 20 is smaller than the gap between the fourth surface 301122 and the main shaft 10. For example, the third surface 301121 of the second rotating part 30112 is in contact with at least a portion of the surface of the cover plate 20, while the fourth surface 301122 of the second rotating part 30112 is in clearance fit with the main shaft 10.

[0090] Figure 14 for Figure 8b The GG cross-sectional view of the rotating shaft assembly shown. Figure 14 This can be used to demonstrate the interaction between the second rotating part 30112, the main shaft 10, and the cover plate 20 when the electronic device is in an intermediate state. For example... Figure 14 As shown, when the electronic device is in the intermediate state, the gap between the third surface 301121 of the second rotating part 30112 and the cover plate 20 is also smaller than the gap between the fourth surface 301122 and the main shaft 10. For example, the third surface 301121 of the second rotating part 30112 is in contact with at least a part of the surface of the cover plate 20, while the fourth surface 301122 of the second rotating part 30112 is in clearance fit with the main shaft 10.

[0091] Figure 15 for Figure 9b The HH cross-sectional view of the rotating shaft assembly shown. Figure 15 This can be used to demonstrate the interaction between the second rotating part and the 30112 main shaft 10 and cover plate 20 when the electronic device is in the closed state. For example... Figure 15 As shown, when the electronic device is in the closed state, the gap between the third surface 301121 of the second rotating part 30112 and the cover plate 20 is also smaller than the gap between the fourth surface 301122 and the main shaft 10. For example, the third surface 301121 of the second rotating part 30112 is in contact with at least a part of the surface of the cover plate 20, while the fourth surface 301122 of the second rotating part 30112 is in clearance fit with the main shaft 10.

[0092] Based on the above Figures 13 to 15 As can be seen from the description of the illustrated embodiment, during the process of the electronic device changing from a flattened state to a closed state, the first swing arm 301 rotates, causing the first arc-shaped rotating block 3011 to rotate. The second rotating part 30112 can slide along at least a portion of the surface of the cover plate 20, and the second rotating part 30112 is in clearance fit with the main shaft 10. In other words, the cover plate 20 can constrain the movement trajectory of the second rotating part 30112, so that the first swing arm 301 can rotate along a specific trajectory.

[0093] It is worth mentioning that, in this application, when the first swing arm 301 rotates, the second rotating part 30112 slides along at least a portion of the surface of the main shaft 10. This can include a situation where the second rotating part 30112 is always in contact with at least a portion of the surface of the cover plate 20, or a situation where, at some rotation angles, there is a small gap between the second rotating part 30112 and at least a portion of the surface of the cover plate 20. The key is to ensure that the cover plate 20 can constrain the movement trajectory of the second rotating part 30112.

[0094] This application does not limit the specific manner in which the second rotating part 30112 is fitted with the main shaft 10 and the cover plate 20 as described above; please refer to [reference needed]. Figure 6a In some embodiments of this application, the second rotating part 30112 includes a second arc-shaped groove 301123, so it can be understood that the third surface 301121 of the second rotating part 30112 can be the bottom of the second arc-shaped groove 301123. Also refer to... Figure 11 The cover plate 20 includes a second arcuate protrusion 202, and at least a portion of the second arcuate protrusion 202 may be located in the second arcuate groove 301123. Additionally, by... Figures 13 to 15 It can be seen that when the first swing arm 301 rotates, the second rotating part 30112 slides along the surface of the second arc-shaped protrusion 202, so as to constrain the motion trajectory of the second rotating part 30112 by utilizing the surface of the second arc-shaped protrusion 202, thereby ensuring the rotational stability of the second rotating part 30112, which is beneficial to improving the rotational stability of the first swing arm 301.

[0095] Understandably, to ensure the reliability of the rotation of the first swing arm 301, it is advisable to refer to... Figure 16 , Figure 16 Another cross-sectional view of the assembly structure of the spindle and cover plate provided in the embodiment of this application can be used to show the relative position of the second arc-shaped protrusion 202 and the spindle 10. An arc-shaped gap can also be formed between the spindle 10 and the second arc-shaped protrusion 202, and at least a portion of the second rotating part 30112 is located in the arc-shaped gap.

[0096] Because the thickness of structural components is a key factor affecting the reliability of their overlap, in the existing technology where the cover plate and the main shaft overlap at the same position with the first arc-shaped rotating block, the thickness of all three components must meet the requirements for overlap reliability, so their thickness cannot be too small. Therefore, the overall thickness of the existing rotating shaft mechanism is relatively large.

[0097] The solution provided in this application, as described above... Figure 6a As can be seen from the description, along the axial direction of the rotating shaft mechanism 1000, the first rotating part 30111 and the second rotating part 30112 are arranged at intervals. Figure 11As described in the structure of the cover plate 20, along the axial direction of the rotating shaft mechanism 1000, the first arc-shaped protrusion 201 and the second arc-shaped protrusion 202 of the cover plate are spaced apart. That is, along the axial direction of the rotating shaft mechanism 1000, the portion of the first swing arm 301 that overlaps with the main shaft 10 and the portion of the first swing arm 301 that overlaps with the cover plate 20 are staggered. With this design, since the first rotating part 30111 only needs to overlap with the main shaft 10 during movement, and not with the cover plate 20, the thickness of the first rotating part 30111 and the main shaft 10 only needs to be designed to meet the reliability requirements of their overlap, which is beneficial for reducing the thickness of the first rotating part 30111 and the main shaft 10. Furthermore, since the portion of the cover plate 20 that is opposite to the first rotating part 30111 does not overlap with the first rotating part 30111, the structural reliability requirements for this portion of the cover plate 20 are relatively low, which is conducive to reducing the thickness of this portion of the cover plate 20.

[0098] Similarly, the thicknesses of the second rotating part 30112 and the cover plate 20 only need to be designed to meet the requirements of reliable overlap between them, which is beneficial to reducing the thickness of the second rotating part 30112 and the cover plate 20. Furthermore, since the portion of the main shaft 10 opposite to the second rotating part 30112 does not overlap with it, the structural reliability requirements for this portion of the main shaft 10 are lower, thus facilitating a reduction in the thickness of this portion of the main shaft 10.

[0099] In summary, by adopting the design scheme of the rotating shaft mechanism 1000 provided in this application, without adding any parts, by axially offsetting the parts of the main shaft 10 and the cover plate 20 that overlap with the first arc-shaped rotating block 3011, the rotational reliability requirements of the first swing arm 301 can be met, while also facilitating the thinning of the first arc-shaped rotating block 3011, the main shaft 10, and the cover plate 20, especially the thinning of the first arc-shaped rotating block 3011.

[0100] You can continue to refer to the above. Figure 4 and Figure 5 In this embodiment, the pivot assembly 100 further includes a second rotating assembly 60. The second rotating assembly 60 and the first rotating assembly 30 are respectively disposed on both sides of the main shaft 10. The second rotating assembly 60 can also be rotatably connected to the main shaft 10 and the cover plate 20. It is understood that the second rotating assembly 60 and the first rotating assembly 30 can be respectively connected to the two housings of the electronic device to realize the rotation of the two housings in opposite or opposite directions, thereby realizing the foldable function of the electronic device.

[0101] In some embodiments of this application, the second rotating component 60 is configured similarly to the first rotating component 30. For example, the second rotating component 60 includes a second swing arm 601, which includes a second arc-shaped rotating block 6011. The second arc-shaped rotating block 6011 is rotatably connected to the main shaft 10 and to the cover plate 20, thereby realizing the rotatable connection between the second swing arm 601 and the main shaft 10 and the cover plate 20.

[0102] The specific structure of the second swing arm 601 can also be referred to Figure 6a In other words Figure 6a It can also be used to demonstrate the structure of the second swing arm 601. For example... Figure 6a As shown, the second arc-shaped rotating block 6011 of the second swing arm 601 includes a third rotating part 60111 and a fourth rotating part 60112, and is composed of... Figure 5 and Figure 6a It can be seen that, along the axial direction of the rotating shaft mechanism 1000, the third rotating part 60111 and the fourth rotating part 60112 are arranged at intervals. Additionally, as... Figure 6a As shown, in some embodiments of this application, the second arc-shaped rotating block 6011 may further include a second connecting portion 60113, which is connected between the third rotating portion 60111 and the fourth rotating portion 60112. The thickness of the third rotating portion 60111 is less than the thickness of the second connecting portion 60113, and the thickness of the fourth rotating portion 60112 is less than the thickness of the second connecting portion 60113. This is beneficial to improving the structural reliability of the second arc-shaped rotating block 6011, thereby improving the structural reliability of the second swing arm 601.

[0103] In this application, the cooperation relationship between the second swing arm 601, the main shaft 10, and the cover plate 20 can also be referred to. Figure 7 .like Figure 7 As shown, the third rotating part 60111 may include a fifth surface 601111 and a sixth surface 601112, with the fifth surface 601111 facing the cover plate 20 and the sixth surface 601112 facing the main shaft 10. And by Figure 7 It can be seen that when the electronic device is in a flattened state, the gap between the fifth surface 601111 and the main shaft 10 is smaller than the gap between the sixth surface 601112 and the cover plate 20. For example, the fifth surface 601111 of the third rotating part 60111 is in contact with at least a portion of the surface of the main shaft 10, while the sixth surface 601112 of the third rotating part 60111 is in clearance fit with the cover plate 20.

[0104] Additionally, refer to Figure 8cWhen the electronic device is in the intermediate state, the gap between the fifth surface 601111 and the main shaft 10 is also smaller than the gap between the sixth surface 601112 and the cover plate 20. For example, the fifth surface 601111 of the third rotating part 60111 is in contact with at least a part of the surface of the main shaft 10, while the sixth surface 601112 of the third rotating part 60111 is in clearance fit with the cover plate 20.

[0105] As can be seen from 9c, when the electronic device is in a closed state, the gap between the fifth surface 601111 and the main shaft 10 is also smaller than the gap between the sixth surface 601112 and the cover plate 20. For example, the fifth surface 601111 of the third rotating part 60111 is in contact with at least a part of the surface of the main shaft 10, while the sixth surface 601112 of the third rotating part 60111 is in clearance fit with the cover plate 20.

[0106] As can be seen from the above embodiments, during the process of the electronic device changing from a flattened state to a closed state, the rotation of the second swing arm 601 drives the second arc-shaped rotating block 6011 to rotate. The third rotating part 60111 can slide along at least a portion of the surface of the main shaft 10, and the third rotating part 60111 is in clearance fit with the cover plate 20. In other words, the main shaft 10 can constrain the movement trajectory of the third rotating part 60111, so that the second swing arm 601 can rotate along a specific trajectory.

[0107] It is worth mentioning that, in this application, when the second swing arm 601 rotates, the third rotating part 60111 slides along at least a portion of the surface of the main shaft 10. This can include a situation where the third rotating part 60111 is always in contact with at least a portion of the surface of the main shaft 10, or a situation where, at some rotation angles, there is a slight gap between the third rotating part 60111 and at least a portion of the surface of the main shaft 10. The key is to ensure that the main shaft 10 can constrain the movement trajectory of the third rotating part 60111.

[0108] To ensure that the third rotating part 60111, the main shaft 10, and the cover plate 20 can satisfy the above-mentioned fit relationship, please continue to refer to... Figure 10 In some embodiments of this application, the spindle 10 may further include a third arcuate groove 103. Additionally, refer to... Figure 11 The cover plate 20 also includes a third arc-shaped protrusion 203. For example... Figure 12 It can be seen that the third arc-shaped protrusion 203 and the third arc-shaped groove 103 are arranged opposite to each other, and there is a second gap 70 between the third arc-shaped protrusion 203 and the third arc-shaped groove 103, which is an arc-shaped gap. In addition, at least a portion of the third rotating part 60111 can be located in the second gap 70 to realize the arrangement of the third rotating part 60111 between the main shaft 10 and the cover plate 20.

[0109] And by Figure 7 , Figure 8c and Figure 9c As can be seen, when the second swing arm 601 rotates, the third rotating part 60111 slides along the groove wall of the third arc groove 103, so as to constrain the motion trajectory of the third rotating part 60111 by using the groove wall of the third arc groove 103, thereby ensuring the rotational stability of the third rotating part 60111, which is beneficial to improving the rotational stability of the second swing arm 601.

[0110] Also refer to Figure 13 The fourth rotating part 60112 includes a seventh surface 601121 and an eighth surface 601122, with the seventh surface 601121 facing the cover plate 20 and the eighth surface 601122 facing the main shaft 10. Figure 13 As shown, when the electronic device is in a flattened state, the gap between the seventh surface 601121 and the cover plate 20 is smaller than the gap between the eighth surface 601122 and the main shaft 10. For example, the seventh surface 601121 of the fourth rotating part 60112 is in contact with at least a portion of the surface of the cover plate 20, while the eighth surface 601122 of the fourth rotating part 60112 is in clearance fit with the main shaft 10.

[0111] like Figure 14 As shown, when the electronic device is in the intermediate state, the gap between the seventh surface 601121 and the cover plate 20 is also smaller than the gap between the eighth surface 601122 and the main shaft 10. For example, the seventh surface 601121 of the fourth rotating part 60112 is in contact with at least a part of the surface of the cover plate 20, while the eighth surface 601122 of the fourth rotating part 60112 is in clearance fit with the main shaft 10.

[0112] For example Figure 15 As shown, when the electronic device is in the closed state, the gap between the seventh surface 601121 and the cover plate 20 is also smaller than the gap between the eighth surface 601122 and the main shaft 10. For example, the seventh surface 601121 of the fourth rotating part 60112 is in contact with at least a portion of the surface of the cover plate 20, while the eighth surface 601122 of the fourth rotating part 60112 is in clearance fit with the main shaft 10.

[0113] Based on the above Figures 13 to 15 As can be seen from the description of the illustrated embodiment, during the process of the electronic device changing from a flattened state to a closed state, the second swing arm 601 rotates, causing the second arc-shaped rotating block 6011 to rotate. The fourth rotating part 60112 can slide along at least a portion of the surface of the cover plate 20, and the fourth rotating part 60112 is in clearance fit with the main shaft 10. In other words, the cover plate 20 can constrain the movement trajectory of the fourth rotating part 60112, so that the second swing arm 601 can rotate along a specific trajectory.

[0114] It is worth mentioning that, in this application, when the second swing arm 601 rotates, the fourth rotating part 60112 slides along at least a portion of the surface of the cover plate 20. This can include a situation where the fourth rotating part 60112 is always in contact with at least a portion of the surface of the cover plate 20, or a situation where, at some rotation angles, there is a small gap between the fourth rotating part 60112 and at least a portion of the surface of the cover plate 20. The key is to ensure that the cover plate 20 can constrain the movement trajectory of the fourth rotating part 60112.

[0115] In order to enable the fourth rotating part 60112 to satisfy the above-mentioned mating relationship with the main shaft 10 and the cover plate 20, it is understood that in some embodiments of this application, the fourth rotating part 60112 includes an arc-shaped groove, wherein the seventh surface 601121 may be the bottom of the arc-shaped groove. Referring also to... Figure 11 The cover plate 20 includes a fourth arcuate protrusion 204, and at least a portion of the fourth arcuate protrusion 204 may be located in the arcuate groove of the fourth rotating part 60112. Additionally, by... Figures 13 to 15 It can be seen that when the second swing arm 601 rotates, the fourth rotating part 60112 slides along the surface of the fourth arc-shaped protrusion 204, so as to constrain the motion trajectory of the fourth rotating part 60112 by using the surface of the fourth arc-shaped protrusion 204, thereby ensuring the rotational stability of the fourth rotating part 60112, which is beneficial to improving the rotational stability of the second swing arm 601.

[0116] Understandably, we should continue to refer to... Figure 16 In order to ensure the reliability of the rotation of the second swing arm 601, an arc-shaped gap can also be formed between the main shaft 10 and the fourth arc-shaped protrusion 204, and at least a part of the fourth rotating part 60112 is located in the arc-shaped gap.

[0117] Furthermore, as can be understood from the above description of the third rotating part 60111 and the fourth rotating part 60112 of the second swing arm 601, in some embodiments of this application, along the direction from the main shaft to the cover plate, the maximum distance from the fifth surface 601111 of the third rotating part 60111 to the support surface 205 of the cover plate 20 is less than the maximum distance from the eighth surface 601122 to the support surface 205. The maximum distance from the seventh surface 601121 to the support surface 205 is less than the maximum distance from the sixth surface 601112 to the support surface 205. That is to say, both the third rotating part 60111 and the fourth rotating part 60112 of the second arc-shaped rotating block 6011 of the second swing arm 601 can be thinned, which is beneficial to the thinning of the second arc-shaped rotating block 6011, thereby reducing the space occupied by the second arc-shaped rotating block 6011 in the rotating shaft mechanism 1000, and further facilitating the realization of the thin design of the entire rotating shaft mechanism 1000.

[0118] It should be noted that this application does not limit the number of rotating parts on the first swing arm 301 and the second swing arm 601 that are used to engage with the main shaft 10 and the number of rotating parts that are used to engage with the cover plate 20, and these can be selected according to specific design needs.

[0119] After introducing the cooperation method between the first swing arm 301 and the second swing arm 601 and the main shaft 10 and the cover plate 20, the impact of this cooperation method on the rotating shaft mechanism 1000 will be analyzed next.

[0120] Reference Figure 17a , Figure 17a This is a schematic diagram of a prior art rotating shaft mechanism in a closed state, showing the cover plate and main shaft overlapping with the first arc-shaped rotating block at the same position. It can be used as a comparative example to illustrate the design advantages of the rotating shaft mechanism provided in this application; therefore, the following will... Figure 17a The examples shown are referred to as comparative examples.

[0121] Also refer to Figure 17b , Figure 17b This is a schematic diagram of the rotating shaft mechanism provided in this application when it is in a closed state. Figure 17b In the illustrated embodiment and comparative example of the pivot mechanism, the overlap angle between the swing arm and the main shaft 10 is α, the radius of the screen-enclosing space formed by the swing arm is R1, and the center distance between the rotation axes of the first swing arm 301 and the second swing arm 601 is D1. However, due to the design scheme of the pivot mechanism 1000 provided in this application, it is beneficial to reduce the thickness of the arc-shaped rotating block, the main shaft 10, and the cover plate 20, thus facilitating the reduction of the overall structure of the pivot mechanism 1000, and further facilitating the thinning design of electronic devices using this pivot mechanism 1000.

[0122] Figure 17c This is another structural diagram of the rotating shaft mechanism provided in this application when it is in a closed state. Figure 17c In the rotating shaft mechanisms of the illustrated embodiment and comparative example, the radius R of the accommodating space formed by the swing arms is the same, the center distance between the rotation axes of the first swing arm 301 and the second swing arm 601 is D1, and the thickness of both rotating shaft mechanisms is the same, h1. That is to say, Figure 17c If the rotating shaft mechanism 1000 shown is not thinned, the space reserved by the thinning of the arc-shaped rotating block, the main shaft 10 and the cover plate 20 can be used to increase the overlap angle between the arc-shaped rotating block and the main shaft 10. This is beneficial to improving the reliability of the rotation of the rotating shaft mechanism 1000 and to improving the drop resistance of the rotating shaft mechanism 1000.

[0123] in addition, Figure 17d This is a schematic diagram of the rotating shaft mechanism provided in this application when it is in a closed state. Figure 17dIn the illustrated embodiment and the comparative example of the rotating shaft mechanism, the overlap angle between the swing arm and the main shaft 10 is the same, and the thickness of the two rotating shaft mechanisms is the same. That is to say, Figure 17d If the rotating shaft mechanism 1000 shown is not thinned, the space reserved by the thinning of the arc-shaped rotating block, the main shaft 10 and the cover plate 20 can be used to increase the rotation axis distance of the first swing arm 301 and the second swing arm 601. This is beneficial to increase the radius of the screen-accommodating space formed by the first swing arm 301 and the second swing arm 601, thereby reducing the compression caused by the rotating shaft mechanism on the bent part of the flexible display screen accommodated in the screen-accommodating space, so as to improve the structural reliability of the flexible display screen.

[0124] As can be understood from the above comparison, the hinge mechanism 1000 provided in this application adopts the above design scheme, which can improve the thin design, structural reliability and screen space of the entire hinge mechanism 1000, thereby facilitating the structural optimization of electronic devices using the hinge mechanism 1000.

[0125] The above embodiments mainly describe the cooperation relationship between the swing arm and the main shaft 10 and the cover plate 20 in the first rotating assembly 30 and the second rotating assembly 60. Besides the swing arm, each rotating assembly also includes other structures. For example, see [reference needed]. Figure 5 The first rotating component 30 may also include a first housing fixing frame 302, which is slidably connected to the first swing arm 301.

[0126] In specific implementation, you can refer to Figure 18 , Figure 18 This is a schematic diagram of a first housing fixing bracket provided in an embodiment of this application. In this application, the first housing fixing bracket 302 may include a first sliding groove 3021, and the first sliding groove 3021 includes a groove wall extending along the thickness direction of the first housing fixing bracket 302.

[0127] Additionally, refer to Figure 19 , Figure 19 This is a schematic diagram of an assembly structure of a first housing fixing frame and a first swing arm provided in an embodiment of this application. It can be used to illustrate the position of the first swing arm 301 on the first housing fixing frame 302 when the electronic device is in a flattened state. Figure 19 This can be used to demonstrate the side of the assembly structure that faces away from the flexible display screen. For example... Figure 19 As shown, a portion of the first swing arm 301 is located in the first slide groove 3021, and the distance between the first swing arm 301 and the surface of the first housing fixing member 302 facing away from the flexible display screen is d1.

[0128] For example Figure 20 As shown, Figure 20This is a schematic diagram illustrating another assembly structure of the first housing fixing bracket and the first swing arm provided in an embodiment of this application. It can be used to show the position of the first swing arm 301 on the first housing fixing bracket 302 when the electronic device is in a closed state. Figure 20 This can be used to demonstrate the side of the assembly structure that faces away from the flexible display screen. For example... Figure 20 As shown, when the electronic device is in a closed state, the distance between the first swing arm 301 and the surface of the first housing fixing frame 302 facing away from the flexible display screen is d2.

[0129] By comparison Figure 19 and Figure 20 It can be seen that d2 < d1, meaning that during the process of the electronic device changing from a flattened state to a closed state, the first swing arm 301 slides within the first slide groove 3021 along the thickness direction of the first housing fixing frame 302, specifically along the direction from the side of the first housing fixing frame 302 facing the flexible display screen to the side away from the flexible display screen. This is to meet the rotation requirements of the first swing arm 301.

[0130] In addition, you can continue to refer to Figure 5 The first rotating assembly 30 may further include a first connecting rod 303, which is mounted on the first housing fixing frame 302. Along the axial direction of the rotating shaft mechanism 1000, the first connecting rod 303 is located on one side of the first swing arm 301. (Refer to...) Figure 21 , Figure 21 This is a schematic diagram of a first connecting rod provided in an embodiment of this application. The first connecting rod 303 includes a first end 3031 and a second end 3032. The first end 3031 is rotatably connected to the first swing arm 301, and the second end 3032 is rotatably connected to the first housing fixing frame 302. This ensures the reliability of the rotation of the first swing arm 301, thereby ensuring the stability of the movement of the rotating shaft mechanism 1000.

[0131] like Figure 5 As shown, other structures of the second rotating assembly 60 can be referenced to those of the first rotating assembly 30. For example, the second rotating assembly 60 may include a second housing mounting bracket 602. The first housing mounting bracket 302 can be used to fixably connect to the first housing of the electronic device, and the second housing mounting bracket 602 can be used to fixably connect to the second housing of the electronic device, thereby allowing the first housing and the second housing to be rotatably connected via the rotating shaft mechanism 1000. Furthermore, other structures of the second rotating assembly 60 can be configured with reference to the description of the first rotating assembly 30 in the above embodiments, and will not be elaborated upon here.

[0132] In the above embodiments of the rotating shaft mechanism 1000, the symmetrical structural design of the second rotating component 60 and the first rotating component 30 is used as an example to describe the arrangement of the rotating shaft mechanism 1000, which helps to reduce the design difficulty of the rotating shaft mechanism 1000. However, in other embodiments of this application, the second rotating component 60 and the first rotating component 30 may adopt completely different design methods, which are not limited in this application.

[0133] Furthermore, in the above embodiments, the possible design methods of the hinge mechanism are described with reference to a two-fold electronic device 1000. When the electronic device 1000 is a three-fold, four-fold, or more-fold electronic device, each hinge mechanism can be set with reference to the above embodiments, and will not be described in detail here.

[0134] It is worth mentioning that, in the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0135] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism (1000), characterized in that, The rotating shaft mechanism (1000) includes a main shaft (10), a cover plate (20), and a first rotating assembly (30), wherein: The cover plate (20) is placed on the main shaft (10), and the cover plate (20) is connected to the main shaft (10); The first rotating assembly (30) includes a first swing arm (301), the first swing arm (301) includes a first arc-shaped rotating block (3011), at least a portion of the first arc-shaped rotating block (3011) is located between the cover plate (20) and the main shaft (10), the first arc-shaped rotating block (3011) is rotatably connected to the main shaft (10) and rotatably connected to the cover plate (20); The first arc-shaped rotating block (3011) includes a first rotating part (30111) and a second rotating part (30112). Along the axial direction of the rotating shaft mechanism (1000), the first rotating part (30111) and the second rotating part (30112) are spaced apart. The first rotating part (30111) includes a first surface (301111) and a second surface (301112) arranged opposite to each other. The first surface (301111) faces the main shaft (10), and the second surface (301112) faces the cover plate (20). 11) The gap between the second rotating part (301112) and the main shaft (10) is smaller than the gap between the second surface (301112) and the cover plate (20); the second rotating part (30112) includes a third surface (301121) and a fourth surface (301122) arranged opposite to each other, the third surface (301121) faces the cover plate (20), the fourth surface (301122) faces the main shaft (10), and the gap between the third surface (301121) and the cover plate (20) is smaller than the gap between the fourth surface (301122) and the main shaft (10); When the first swing arm (301) rotates, the first rotating part (30111) slides along at least a portion of the surface of the main shaft (10), and the second rotating part (30112) slides along at least a portion of the surface of the cover plate (20).

2. The rotating shaft mechanism (1000) as described in claim 1, characterized in that, The cover plate (20) includes a support surface (205) for supporting the flexible display screen (4000); Along the direction from the main shaft (10) to the cover plate (20), the maximum distance from the first surface (301111) to the support surface (205) is less than the maximum distance from the fourth surface (301122) to the support surface; the maximum distance from the third surface (301121) to the support surface (205) is less than the maximum distance from the second surface (301112) to the support surface (205).

3. The rotating shaft mechanism (1000) as described in claim 1 or 2, characterized in that, The main shaft (10) includes a first arc-shaped groove (102), and the cover plate (20) includes a first arc-shaped protrusion (201). The first arc-shaped protrusion (201) is disposed opposite to the first arc-shaped groove (102), and there is a first gap (50) between the first arc-shaped protrusion (201) and the first arc-shaped groove (102). At least a portion of the first rotating part (30111) is located in the first gap (50), and when the first swing arm (301) rotates, the first rotating part (30111) slides along the groove wall of the first arcuate groove (102).

4. The rotating shaft mechanism (1000) as described in any one of claims 1 to 3, characterized in that, The second rotating part (30112) includes a second arcuate groove (301123), and the cover plate (20) includes a second arcuate protrusion (202), at least a portion of which is located in the second arcuate groove (301123); when the first swing arm (301) rotates, the second rotating part (30112) slides along the surface of the second arcuate protrusion (202).

5. The rotating shaft mechanism (1000) as described in any one of claims 1 to 4, characterized in that, The first arc-shaped rotating block (3011) further includes a first connecting part (30113), which is connected between the first rotating part (30111) and the second rotating part (30112); the thickness of the first rotating part (30111) is less than the thickness of the first connecting part (30113), and the thickness of the second rotating part (30112) is less than the thickness of the first connecting part (30113).

6. The rotating shaft mechanism (1000) as described in any one of claims 1 to 5, characterized in that, The first rotating assembly (30) further includes a first housing (2000) fixing frame, and the first swing arm (301) is slidably connected to the first housing (2000) fixing frame.

7. The rotating shaft mechanism (1000) as described in claim 6, characterized in that, The first housing fixing frame (302) includes a first slide groove (3021), a portion of the first swing arm (301) is located in the first slide groove (3021), and when the first swing arm (301) rotates, the first swing arm (301) slides in the first slide groove (3021) along the thickness direction of the first housing fixing frame (302).

8. The rotating shaft mechanism (1000) as described in claim 7, characterized in that, The first rotating assembly (30) further includes a first connecting rod (303), which is mounted on the first housing fixing frame (302). Along the axial direction of the rotating shaft mechanism (1000), the first connecting rod (303) is located on one side of the first swing arm (301), and the first connecting rod (303) includes a first end (3031) and a second end (3032). The first end (3031) is rotatably connected to the first swing arm (301), and the second end (3032) is rotatably connected to the first housing fixing frame (302).

9. The rotating shaft mechanism (1000) as described in any one of claims 1 to 8, characterized in that, The rotating shaft mechanism (1000) further includes a second rotating component (60), which is disposed on both sides of the main shaft (10) and the first rotating component (30). The second rotating component (60) includes a second swing arm (601), which includes a second arc-shaped rotating block (6011). At least a portion of the second arc-shaped rotating block (6011) is located between the cover plate (20) and the main shaft (10). The second arc-shaped rotating block (6011) is rotatably connected to the main shaft (10) and rotatably connected to the cover plate (20). The second arc-shaped rotating block (6011) includes a third rotating part (60111) and a fourth rotating part (60112). Along the axial direction of the rotating shaft mechanism (1000), the third rotating part (60111) and the fourth rotating part (60112) are spaced apart. The third rotating part (60111) includes a fifth surface (601111) and a sixth surface (601112) arranged opposite to each other. The fifth surface (601111) faces the main shaft (10), and the sixth surface (601112) faces the cover plate (20). 11) The gap between the fourth rotating part (601112) and the main shaft (10) is smaller than the gap between the sixth surface (601112) and the cover plate (20); the fourth rotating part (60112) includes a seventh surface (601121) and an eighth surface (601122) arranged opposite to each other, the seventh surface (601121) faces the cover plate (20), the eighth surface (601122) faces the main shaft (10), and the gap between the seventh surface (601121) and the cover plate (20) is smaller than the gap between the eighth surface (601122) and the main shaft (10); When the second swing arm (601) rotates, the third rotating part (60111) slides along at least a portion of the surface of the main shaft (10), and the fourth rotating part (60112) slides along at least a portion of the surface of the cover plate (20).

10. The rotating shaft mechanism (1000) as described in claim 9, characterized in that, The cover plate (20) includes a support surface (205) for supporting the flexible display screen (4000); Along the direction from the main shaft (10) to the cover plate (20), the maximum distance from the fifth surface (601111) to the support surface (205) is less than the maximum distance from the eighth surface (601122) to the support surface (205); the maximum distance from the seventh surface (601121) to the support surface (205) is less than the maximum distance from the sixth surface (601112) to the support surface (205).

11. The rotating shaft mechanism (1000) as described in claim 9 or 10, characterized in that, The main shaft (10) includes a third arcuate groove (103), and the cover plate (20) includes a third arcuate protrusion (203). At least a portion of the third arcuate protrusion (203) and the third arcuate groove (103) are disposed opposite each other, and a second gap (70) is formed between the third arcuate protrusion (203) and the third arcuate groove (103). At least a portion of the third rotating part (60111) is located in the second gap (70), and when the second swing arm (601) rotates, the third rotating part (60111) slides along the groove wall of the third arcuate groove (103).

12. The rotating shaft mechanism (1000) as described in any one of claims 9 to 11, characterized in that, The cover plate (20) includes a fourth arc-shaped protrusion (204), and when the second swing arm (601) rotates, the fourth rotating part (60112) slides along the surface of the fourth arc-shaped protrusion (204).

13. The rotating shaft mechanism (1000) as described in any one of claims 9 to 12, characterized in that, The second arc-shaped rotating block (6011) further includes a second connecting part (60113), which is connected between the third rotating part (60111) and the fourth rotating part (60112); the thickness of the third rotating part (60111) is less than the thickness of the second connecting part (60113), and the thickness of the fourth rotating part (60112) is less than the thickness of the second connecting part (60113).

14. The rotating shaft mechanism (1000) as described in any one of claims 1 to 13, characterized in that, The spindle (10) includes a mounting groove (101), the cover plate (20) is mounted in the mounting groove (101), and the cover plate (20) is detachably connected to the spindle (10).

15. An electronic device, characterized in that, The electronic device includes a first housing (2000), a second housing (3000), and a pivot mechanism (1000) as described in any one of claims 1 to 14, wherein the first housing (2000) and the second housing (3000) are rotatably connected by the pivot mechanism (1000).

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